Cyclopentane derivatives
CA 1339611 C · Owner: Briner, Paul Howard · Inventors: Briner, Paul Howard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides cyclopentane derivatives of the general formula, (I), (II), and (IV), in which n represents an integer from 0 to 5 each R, represents a halogen atom, nitro cyano, hydroxyl, alkyl, haloalkyl, alkoxy haloalkoxy, amino, alkylamino, dialkylamino alkoxycarbonyl, carboxyl, alkanoyl, alkylthio alkylsulphinyl, alkylsulphonyl, carbamoyl alkylamido, cycloalkyl or phenyl group R1, and R2 independently represent a hydrogen atom or an alkyl group, and R3 represents an optionally substituted alkyl or aryl group; and a process for their preparation. Compounds of formulae I II and, IV are useful as intermediates in the preparation of certain fungicidally active cyclopentane …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 30, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.